Cabinet radiator and heating unit



R.'R.'FISHER CABINET RADIATOR AND -HEATING UNIT Filed Feb. 7, -1940 Klik March 24, 1942'.

mer Z5 Um Z4 Patented Mar. 24, 1942 UNITED STATES PATENT OFFICE 2,277,094 y CABINET RADIATOR AND HEATING'UNIT Roy R. Fisher, DetroiIggMitsh.v v Application February 7. 1940, semi No." 317.683

` 4 claims. (ci. 21a-sail v This invention relates to a. portable radiator of the cabinet type.

It is an object of the present invention to provide a novel cabinet design for a portable radiator for the heating of the atmosphere in homes and oflices, and other places of abode. One obtion, as shown in Fig. 2, wherein the box is from .as shown at I9. @length of the cabinet. An air valve 20 permits ject of the invention is to provide a cabinet which having to do with details of design and operation' including, for example, the positioning of the heating units and the formation of the heating fins, will be brought out in the following description and claims.

In the drawing:

three to four times as high as it is wide. The lower edge of the box is semi-cylindrical in shape, Box I8 extends throughout the the escape of air from the retainer or heating chamber and also serves as a safety valve.

Parallel and concentric with the scmi-cylindri; I

cal bottom I9 of the boiler unit I8 is located a tube 2l, the inside of which is sealed from the inside of the boiler unit and the outside of which is in contact with the liquid and uid within the boiler unit. This tube is positioned adjacent, but

`spaced slightly'from, the bottom so that there vis a restricted passageway around it. Within the tube 2I is positioned a suitable electric heating element 22 connected to a lead wire 23. These heating elements are well known in the art and need not be described here.

On the' long parallel sides of the boiler unit I8 are members arranged to conduct heat from the Fig. 1 is a perspective view of the cabinet positioned adjacent a wall.

Fig. 2 is a vertical section on the lines 2 2 of Fig. 1,l

Fig. 3 'is a detail plan view of a portion of the preferred form of heating unit.

Fig. 4 is a view similar to Fig. 3 showing a modified type of n.

The cabinet I0 is an attractively designed rectangular cabinet adapted to be positioned adjacent the wall of a home or any room to be heated. The back, front, top, and ends of the cabinet are insulated as at II. Insulation of the back protects the wall against which the cabinet is located and insulation of the top permitsfit to be used for resting books, magazines or other articles without damage thereto. Insulation of` the front and ends of the cabinet permits its use in places where young children are free to come in contact with the cabinet. Inlets for air to pass through the cabinet are provided in the bottom at I2. Opposed inlets I3 are provided in the back and front, and an outlet I4 is at the top and front. An inner back plate I5 cooperates with a front lining I6 to ,form a conduit through which air is passed and directed horizontally outward into the room. If desired, a small fan I1 driven by an electric motor, may be used to create an air current. Otherwise, the heat from the boiler unit causes an induced draft through the stack or conduit.

The heating unit consists of a liquid and steam retainer box I3 which has a vertical cross sec- 55 boiler to air passing through the cabinet. In the preferred form, these membersl consist of long strips 24 bent sinuously and welded in heat conducting relation at spaced points at the sides of the boiler unit as at 25. These members 24, in cooperation with the inner walls of the cabinet, form vertical passages through which air must pass to reach the outlet. By spacing the fins, as shown in Fig. 3, considerable contact surface is provided so that there will be a free transfer of heat. In Fig. 4, the heat passages at the sides of the boiler unit are formed by a U-shaped members 26 which are each welded in spaced parallel relation along the sides of the boiler unit.

By locating the cylindrical heating tube 2I directly adjacent the bottom I9, there is formed at the bottom a relatively thin wall'of water around the lower portion of the heating tube.-

by small brackets 30 which can be spot welded or bolted to the end walls of the cabinet I0. bOther suitable supporting means may, of course,

eused.

I claim:

1. A portable heating device for the heating oi' buildings and enclosures including a heating unit comprising a single longitudinally extending horizontal metal container having a height approximately three to four times its width, and formed with a semi-cylindrical bottom, a tube extending longitudinally of said container directly adjacent but spaced slightly from, the bottom thereof, an electrical heating unit within said tube for passing heat to liquid within said container, and heat exchange elements comprising sinuous metal strips fastened in heat conducting'r'elation at spaced points along each side of said container whereby ilues are formed for the passage of air being heated.

2. A portable heating device for the heating of buildings and enclosures including a heating unit comprising a horizontal longitudinally extending metal container having a height approximately three to four times its width, and formed with a semi-cylindrical bottom, a tube extending longitudinally of said container directly adjacent but spaced slightly from the bottom thereof, an electrical heating unit within said tube for passing heat to liquid within said container, and heat exchange elements comprising spaced parallel metal strips along the sides of said container arranged to form vertical passages for air being heated.

3. A heating device comprising a cabinet and a heating unit in the lower portion of said cabinet comprising a box having rectangular cross sections extending longitudinally of said cabinet, a boiler unit directly adjacent the bottom of said box comprising a tube passing through the box and spaced slightly from the bottom, and an electrical heating unit within said tube for conveying heat to said tube and to water surrounding said tube within said box, and heat exchange elements comprising spaced parallel metal strips welded along the sides of said container and arranged to form vertical passages for air being heated, said box and said heat exchange elements being removably supported as a unit in said cabinet.

4. A heating device comprising a cabinet and a heating unit in the lower portion oi' said cabinet comprising an elongated boiler, a container mounted longitudinally within said boiler and spaced adjacent the bottom of said boiler, said container having electric resistance wires mounted therein, means to insert a relatively small amount of a volatile liquid within said boiler, said boiler and heating unit being adapted to receive said liquid between said container and the bottom of said boiler, a plurality of spaced parallel metal strips extending throughout substantially the entire height of said boiler land welded to the longitudinal vertical walls of said boiler.

- ROY R. FISHER. 

